code: def get_output_dim(self) -> int:
      return self.dense.out_features
  
file_path: allennlp/allennlp/modules/transformer/activation_layer.py
imports: from typing import Union
  import torch
  from allennlp.common import FromParams
  from allennlp.modules.transformer.transformer_module import TransformerModule
  from transformers.models.bert.modeling_bert import ACT2FN
label_desc: Use image node_id 2 for calling the ActivationLayer obj's underlying member method code with example usage: obj.get_output_dim() and returns: self